Texas Instruments

LP339M

LP339M Description

The LP339M from Texas Instruments is a general-purpose quad comparator housed in a 14-SOIC package, designed for precision analog signal processing. Operating within a wide supply voltage range of 2V to 36V (single) or ±1V to 18V (dual), this IC is optimized for low-power applications, featuring a quiescent current of just 100µA (max). With four independent comparators, the LP339M offers excellent performance in voltage monitoring, threshold detection, and signal conditioning. Its low input offset voltage (5mV max @ 5V) and minimal input bias current (0.025µA max @ 5V) ensure high accuracy, making it suitable for battery-powered and portable devices.

LP339M Features

• Low Power Consumption: Quiescent current of 100µA (max) extends battery life in portable applications.
• Wide Voltage Range: Supports 2V to 36V (single) or ±1V to 18V (dual), enabling versatile use in various power environments.
• High Precision: 5mV max input offset voltage and 0.025µA max input bias current ensure reliable signal comparison.
• Robust Packaging: 14-SOIC tube packaging provides mechanical durability and ease of handling.
• Compliance: ROHS3 compliant and REACH unaffected, meeting environmental and safety standards.
• Extended Temperature Range: Operates from 0°C to 70°C, suitable for industrial and consumer applications.

LP339M Applications

The LP339M excels in low-voltage, low-power systems, including:

• Battery Management: Voltage monitoring for overcharge/discharge protection.
• Industrial Control: Threshold detection in sensor interfaces and motor control circuits.
• Consumer Electronics: Signal conditioning in audio equipment and portable devices.
• Automotive Systems: Window comparators for fault detection in 12V/24V systems.
• Medical Devices: Precision signal comparison in diagnostic equipment.

Conclusion of LP339M

The LP339M is a high-performance, low-power quad comparator ideal for precision analog applications. Its wide voltage range, low quiescent current, and high accuracy make it a standout choice for battery-powered, industrial, and automotive systems. While the product is obsolete, its ROHS3 compliance and proven reliability ensure it remains a viable option for legacy designs or replacements. Engineers seeking a cost-effective, general-purpose comparator with low power and high precision will find the LP339M well-suited for their needs.